Nasal breathing piece



FIG. 1 is a top plan view of a nasal breathing piece showing my newdesign;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and

FIG. 6 is bottom plan view thereof.

The ornamental design for a nasal breathing piece, as shown anddescribed.